* {
    margin: 0;
    padding: 0;
}

li {
    list-style: none;
}

a {
    text-decoration: none;
    color: #4e4e4e;
}

header {
    /* width: 1800px; */
    height: 80px;
    background-color: #ffffffe1;
    /* 盒子阴影 */
    box-shadow: 0px 3px 9px 0px rgba(0, 0, 0, .3);
    z-index: 100;
    /* margin-bottom: 10px; */
}

.center {
    /* position: fixed;
    top: 0;
    left: 5%; */
    width: 90%;
    height: 100%;
    margin: 0 auto;
    z-index: 999;
}

header .logo {
    position: relative;
    float: left;
    width: 110px;
    height: 80px;
}

header .logo img {
    position: absolute;
    top: 50%;
    margin-top: -13px;
}
.nav {
    display: flex;
    justify-content: space-evenly;
    float: right;
    width: 532px;
    height: 80px;
}

.nav li {
    position: relative;
    float: left;
    width: 73px;
    height: 80px;
    line-height: 80px;
    text-align: center;
    font-size: 15px;
}

.nav li::before {
    /* 在js中无法操作伪元素 */
    content: '';
    position: absolute;
    bottom: 20px;
    left: 0;
    width: 73px;
    height: 2px;
    background: #1073d8;
    display: none;
}
/* .nav li:first-child::before{
    display: block;
} */
.nav li:hover::before {
    display: block;
}

/* .banner {
    width: 100%;
    height: 316px;
    overflow: hidden;
} */
/* .focus {
    width: 500%;
    height: 316px;
} */
/* .banner img {
    float: left;
    width: 1263px;
    height: 316px;
} */
.swiper-container {
    width: 100%;
    height: 316px;
    overflow: hidden;
}
.swiper-wrapper{
    width: 500%;
    height: 316px;
}
.swiper-slide img{
    float: left;
    width: 1263px;
    height: 316px;
}
/* .swiper-slide {
    text-align: center;
    font-size: 18px;
    background: #fff;
    Center slide text vertically;
    display: -webkit-box;
    display: -ms-flexbox;
    display: -webkit-flex;
    display: flex;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    -webkit-justify-content: center;
    justify-content: center;
    -webkit-box-align: center;
    -ms-flex-align: center;
    -webkit-align-items: center;
    align-items: center;
} */

.areas{
    position: relative;
    width: 1200px;
    height: 144px;
    margin: 0 auto;
    z-index: 10;
}
.areas ul{
    position: absolute;
    top: -60px;
    width: 100%;
    height: 204px;
    /* z-index: 10; */
    background-color: rgba(255, 255, 255);
    box-shadow: 0px 3px 9px 0px rgba(0, 0, 0, .3);
}
.areas ul li{
    float: left;
    width: 200px;
    height: 157px;
}
.areas ul li span {
    /* position: relative; */
    display: inline-block;
    width: 200px;
    height: 50px;
    margin-top: 40px;
    text-align: center;
}
.areas ul li span img {
    /* position: absolute;
    left: 50%;
    margin-left: -25px;  */
    /* 让图片水平居中，给其父元素添加text-align: center */
    width: 50px;
    height: 50px;
}
.areas ul li h3 {
    font-size: 16px;
    color: #6f6f6f;
    text-align: center;
    margin-top: 18px;
}
.areas ul li p {
    font-size: 14px;
    color: #6f6f6f;
    text-align: center;
}
.wx {
    width: 1200px;
    height: 500px;
    margin: 20px auto;
}
.wx .left {
    float: left;
    width: 570px;
    height: 294px;
    margin: 120px 0px 30px 30px;
}
h2 {
    height: 40px;
    line-height: 40px;
    font-size: 30px;
}
p {
    height: 48px;
    margin-top: 20px;
    font-size: 14px;
}
h3 {
    height: 21px;
    font-size: 16px;
    margin: 40px 0 15px;
}
.excel {
    width: 330px;
    height: 110px;
    font-size: 14px;
    text-align: center;
}
.wx .right{
    position: relative;
    float: right;
    margin-top: 80px;
    width: 600px;
    height: 500px;
}
.middle {
    position: absolute;
    top: 150px;
    left: 0;
}
.outer{
    position: absolute;
    top: -20px;
    left: 50%;
    margin-left: -125px;
}
.web {
    width: 1263px;
    height: 512px;
    margin-top: 100px;
    padding: 30px auto 0;
    background-color: #eceaea;
}
.web .pic {
    position: relative;
    float: left;
    width: 600px;
    height: 500px;
}
.second {
    position: absolute;
    top: 150px;
    left: 30px;
}
.first {
    position: absolute;
    left: 127px;
    width: 464px;
    height: 497px;
}
.web .text{
    float: right;
    width: 510px;
    height: 294px;
    margin: 100px 0 0 90px;
}
.success {
    width: 1200px;
    height: 32px;
    margin: 144px auto 20px;
}
.title {
    float: left;
    width: 193px;
    height: 32px;
}
.title h2{
    font-size: 22px;
    height: 32px;
    line-height: 32px;
    color: #494949;
}
.title h2::after {
    content: 'Effective case';
    font-size: 14px;
    font-weight: normal;
    margin-left: 10px;
    color: #6f6f6f;
}
.success ul{
    display: flex;
    justify-content: space-evenly;
    float: right;
    width: 412px;
    height: 31px;
}
.success ul li {
    float: left;
    width: 73px;
    height: 31px;
    text-align: center;
}
.success ul li a {
    height: 31px;
    font-size: 14px;
    line-height: 31px; 
    border: 0;
}
.act {
    background-color: skyblue;
}
.container {
    display: flex;
    flex-flow: row nowrap;
    width: 1200px;
    height: 634px;
    margin: 0 auto;
    overflow: hidden;
}
.container ul {
    float: left;
    flex-shrink: 0;
}
.case,
ul{
    display: flex;
    justify-content: space-between;
    flex-flow: row wrap;
    width: 1200px;
    height: 634px;
}

.case li
,ul li {
    float: left;
    width: 384px;
    height: 293px;
    /* border: 1px solid rgba(253, 252, 252, 0.952); */
}
.case li {
    border: 1px solid rgba(253, 252, 252, 0.952);
}
.case .pic {
    display: block;
    width: 384px;
    height: 215px;
    background-size: 100% auto;
    background-position: 0 0;
    /* animation: slide 4s linear; */
    transition: all ease 4s;
}
.case .pic:hover {
    background-position-y: bottom;
}
/* @keyframes slide {
    0% {
        background-position-y: 0;
    }
    100% {
        background-position-y: bottom;
    }
} */
.case h3 {
    font-size: 16px;
    font-weight: 600;
    height: 21px;
    text-align: center;
    line-height: 21px;
    margin: 20px auto 0;
}
.case p{
    height: 24px;
    line-height: 24px;
    text-align: center;
    font-size: 14px;
    margin-top: 0;
}


